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ANAB · NASDAQ · Biotechnology

AnaptysBio (ANAB)

Manages Jemperli and imsidolimab royalties through GSK and Vanda partnerships.

$55.86
At close+0.57 (+1.04%)

Breakdown13F · 13D/G · Form 4

Institutions220 holders · as of Jun 30, 2026 · largest filers plus last quarter's tail≈ 103.35%30.07M shares
Insiders12 holders · as of Jun 17, 202613.25%3.85M shares
Adds to116.60%

29.10M company shares as of Sep 3, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing

This quarter's institutional total failed a plausibility check; shown: the largest filers plus last quarter's remainder.

A stock split fell inside the quarter, so quarter-on-quarter changes are not shown.

These groups come from separate filings that can overlap, so they add to 116.60%; nothing is left for Other.

Top shareholders13F · 13D/G · Form 4

HolderStakeSharesEvidence
EcoR1 Capital, LLCInstitution
27.08%7.88M13Fas of Jun 30, 2026
James N. Topper1Insiderdirector
9.88%2.88M13Gfiled May 6, 2024
Sirenia Capital Management LPInstitution
6.60%1.92M13Gfiled May 15, 2026
BlackRock, Inc.Institution
6.34%1.84M13Fas of Jun 30, 2026
Tang Capital Management LLCInstitution
4.57%1.33M13Fas of Jun 30, 2026
State Street CorpInstitution
4.42%1.29M13Fas of Jun 30, 2026
Vanguard Capital Management LLCInstitution
3.11%906,23313Fas of Jun 30, 2026
Affinity Asset Advisors, LLCInstitution
2.84%826,10913Fas of Jun 30, 2026
SanofiInstitution
2.82%821,91713Fas of Jun 30, 2026
Millennium Management LLCInstitution
2.77%807,31613Fas of Jun 30, 2026
Daniel FagaInsiderdirector, officer: President, CEO
2.56%743,948Form 4filed Mar 27, 2026
Woodline Partners LPInstitution
2.46%717,01413Fas of Jun 30, 2026
683 Capital Management, LLCInstitution
2.27%660,00013Fas of Jun 30, 2026
Geode Capital Management, LLCInstitution
2.19%637,87313Fas of Jun 30, 2026
Palo Alto Investors LPInstitution
2.07%603,48913Fas of Jun 30, 2026
Goldman Sachs Group IncInstitution
2.01%584,07013Fas of Jun 30, 2026
First Light Asset Management, LLCInstitution
2.00%582,00413Fas of Jun 30, 2026
D. E. Shaw & Co., Inc.Institution
1.85%539,66613Fas of Jun 30, 2026
Vanguard Portfolio Management LLCInstitution
1.81%527,85813Fas of Jun 30, 2026
Apis Capital Advisors, LLCInstitution
1.71%497,00013Fas of Jun 30, 2026
Sofinnova Investments, Inc.Institution
1.70%493,53613Fas of Jun 30, 2026
Arrowstreet Capital, Limited PartnershipInstitution
1.68%488,65113Fas of Jun 30, 2026
Nuveen, LLCInstitution
1.45%420,66413Fas of Jun 30, 2026
Bank of America Corp /DE/Institution
1.44%417,81213Fas of Jun 30, 2026
Citadel Advisors LLCInstitution
1.36%394,37313Fas of Jun 30, 2026
  1. James N. Topper's transaction reports restate only vehicles that traded; the 2024 ownership statement (2.88M) is used instead.

13F — a manager's quarterly holdings · 13D/13G — an ownership statement filed at 5% or more · Form 4 — an insider's transaction report

Institutions13F, as of Jun 30, 2026

220 holders · 30.07M shares

HolderShares% outstandingChg q/qFiled
Ecor1 Capital, LLC7.88M27.08%Aug 14, 2026
BlackRock, Inc.1.84M6.34%Aug 7, 2026
Tang Capital Management LLC1.33M4.57%Aug 14, 2026
State Street Corp1.29M4.42%Aug 7, 2026
Vanguard Capital Management LLC906.2K3.11%Aug 13, 2026
Affinity Asset Advisors, LLC826.1K2.84%Aug 13, 2026
Sanofi821.9K2.82%Jul 28, 2026
Millennium Management LLC807.3K2.77%Aug 14, 2026

Ownership statements13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Sirenia Capital Management LP6.70%1.92M13GMay 15, 2026
BlackRock, Inc.6.20%13GApr 17, 2025

Insider tradesForm 4

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Mar 30, 2026
John P. Schmiddirector
Sale · 3 lots20,645$56.1131,622
Mar 27, 2026
Daniel Fagadirector, officer: President, CEO
Sale · 10 lots17,679$61.61495,965
Feb 11, 2026
Eric J. Loumeauofficer: CHIEF LEGAL OFFICER
Sale10,000$54.0012,835
Jan 15, 2026
Magda Marquetdirector
Sale · 2 lots11,000$48.239,930
Jan 8, 2026
Daniel Fagadirector, officer: President, CEO
Sale14,281$44.71479,344
Jan 8, 2026
Eric J. Loumeauofficer: CHIEF LEGAL OFFICER
Sale2,210$44.7112,835
Jan 8, 2026
Dennis Mulroyofficer: CHIEF FINANCIAL OFFICER
Sale2,515$44.7121,852
Jan 8, 2026
Paul F. Lizzulofficer: Chief Medical Officer
Sale3,650$44.7142,088
Jan 7, 2026
Dennis Mulroyofficer: CHIEF FINANCIAL OFFICER
Sale1,908$45.1117,667
Jan 7, 2026
Daniel Fagadirector, officer: President, CEO
Sale9,202$45.11466,787

CongressHouse and Senate disclosures

Not reported.